Lamp



May'z, 1939. P. c. cALlssl 2,156,617 LAMP 5 Filed Dec. 25, 1958 I I l l"fm y i 34 @UL Patented May 2,1939

t z,i56,611

PATENT OFFICE LAMP Paul C. Calissi,

Philadelphia, Pa.

Application December 23, 1938, Serial No. 247,310

4 Claims.

This invention relates to electric lamps and has as its principal objectto provide in the standard of the lamp an auxiliary light of such lowwattage that it may serve economically as a pilot to dimly illuminatethe room in the immediate vicinity of the lamp. Thus, when the mainlighting unit of the lamp is extinguished, the pilot may be utilized toprovide subdued illumination sufficient to enable one entering thedarkened room to distinguish objects and so avoid any danger of trippingover them.

Other objects and advantages of the invention, such as those relating todetails of construction `for enabling ready replacement of the pilot asdesired and for incorporating the pilot in the standard of the lampstructure without rendering the pilot so obtrusive as to reduce thedesired pleasing appearance of the lamp structure considered as a whole,will be apparent more fully hereinafter.

It will be understood, accordingly, that thel present invention consistssubstantially in the combination, construction, location and relativearrangement of parts, all as described hereinafter, as shown in theaccompanying drawing and as finally pointed out in the appended claims.

In the said accompanying drawing:

Figure 1 is an elevational view of a lamp structure constructed inaccordance with and embodying the principles of the present invention;

Figure 2 is an enlarged vertical sectional view showing the pilot lampassembly embodied in the standard of the main lamp structure; and

Figure 3 is a horizontal sectional view taken on the line 3-3 of Figure2.

Referring now more particularly to the drawing, it will be observed thatthe pilot lamp assembly, designated generally by the reference numeralI0, is incorporated within the standard Il of pedestal type lamp I2.While the lamp shown in the drawing is of the so-called iioor lamp type,it will be understood that the present invention is equally applicableto table 'and bridge lamps where the latter are provided in some portionof; the standard thereof with a straight length such as the portion I3of the lamp illustrated. l i

The standard II of the lamp is parted to provide the aforesaid uppersection I3 and a lower section I4, these sections being preferably oftubular or hollow construction and being secured together in axialalignment by a harp element I5, this latter being formed with oppositelybowed side members IE-I6 integrally secured together at top and bottomby internally threaded bosses II and I8. The upper extremity of thestandard section I4 is threadedly secured to the lower boss I8 of theharp, while the lower extremity of the section I3 of the Jstandard issimilarly secured to the upper boss I1 of the harp. It will beunderstood, of course, thatthe standard sections I3 and I4 may besecured together in the axially spaced relation shown by any othersuitable means so long as adequate space is provided between saidsections for accommodation of a pilot bulb I9 and its socket 20, thislatter being secured to the upper end of the standard section I 4 in anysuitable manner, preferably by a supporting nipple extending upwardlyfrom the section I4 into the lower collar 2| of the pilot lamp socket20. lThe harp I5 is so shaped relatively to the lamp socket 20 and thebulb I9 that the latter may be readily grasped by the fingers forinsertion into and removal from its socket. 20

Secured to the section I4 of the lamp standard is an upwardly presentingcup-shaped member 22 the lower end 23 of which closely embraces and isimmovably secured to the said section I4. This cup-shaped member 22extends upwardly to a point such that its upper free edge 24 lies in aplane below the pilot bulb I9. Resting upon the upper edge 24 of themember 22 is an annular collar 25 having a perforated design in the wallthereof.

Snugly fitted within the perforatedV part 25 is a glass enclosure orglobe 26 having an upper bulbous portion 21 upon the upper edge 28 ofwhich rests a metal top enclosure 29. This upper enclosure 29 iscomplemental in shape to the glass globe 26 and is centrally apertured,as at 30, to snugly but slidably t upn the upper section I3 of the lampstandard or pedestal. A set screw 3i serves to lock the top enclosureimmovably in position with respect to the standard so as to preventaccidental axial displacement of the glass enclosure. Preferably, thisglass enclosure is frosted or otherwise rendered translucent to lightand, if desired, the lower portion 2lia of the enclosure 26 may be sotightly tted within the perforated metal collar 25 that the two parts sofitted together may be-shifted as a unit axially of the pedestal sectionI3 when the set screw 3| is loosened, this movement being, of course,relative to that of the stationary part 22. Secured to this latter partin any suitable manner is a switch unit 32 for controlling the pilotbulb I9, it being understood, of course, that conventional wiring isemployed to permit operation of the pilot bulb independently of the 55main lighting unit $3 which is secured to the upper end of the standardin the customary manner and is provided with the conventional lamp shadeand reector unit 34, and the main lamp switch I5.

To remove or replace the pilot bulb I9 with respect to its socket 20, itis'merely necessary to loosen the securing screw 3| and then raise theglass enclosure and its top axially of the section I3 oi' the lamppedestal to a height suilicient to permit access to the bulb. While inthe arrangement illustrated the part 22 is shown stationary, it will beunderstood that the upper part 29 may be made stationary in which eventthe glass enclosure and the lower supporting part 22 therefor would bedisposed for axial movementl downwardly along the pedestal section I4 toan extent suiclent to afford access to the pilot bulb I9. Of course, inthis latter event, the pilot switch would be secured to the upperimmovable part, while the lower movable part would be provided withmeans, such as a set screw, for secur- -ing it in position.

'I'his invention is susceptible of various other changes andmodiiications without departing from the general principles or realspirit thereof, as indicated in the appended claims.

What is claimed as new and useful is:

l. A lamp comprising, in combination, a vertically extending standardformed of vertically spaced sections, a connecting element interposedbetween said sections for securing the same together in verticalalignment, a lamp enclosure mounted upon said standard and embracing thespace between said sections and said connecting element disposedtherebetween, said enclosure including a pair of separable opaque partsand an intermediate light transmissible part, one of said opaque partsbeing immovably secured to one of said standard sections and the otherof said opaque parts being movable axially along the other of saidstandard sections, said opaque parts being adapted to secure in positiontherebetween said light transmissible part, and a pilot bulb positionedin the space formed between said an intermediate light transmissiblepart, one of said opaque parts being immovably secured to one of saidstandard sections and the other of said ,opaque parts being movableaxially along the other of said standard sections, said opaque partsbeing adapted to secure in position therebetween said lighttransmissible part, a pilot bulb positioned in the space formed betweensaid vertically spaced sections of the standard, and means in the formof a perforated opaque sleeve snugly embracing a portion of said lighttransmissible part to provide an illuminated decorative effect to saidlamp enclosure.

3. In a pedestal type lamp, a main pedestal separated at a point in thelength thereof to provide a space for accommodating a pilot bulb, anenclosure embracing said space, said enclosure including a metal shellxedly secured to the standard to one side of said space, a glass globecomplementally shaped with respect to and adapted'to fit into said shelland a second metal shell slidably mounted upon said standard to theother side of said space, said metal shells serving as opaque endenclosures for said glass globe between which said glass globe isclampedly secured in position, and a pilot bulb disposed lnteriorly ofsaid enclosure and within, the space formed in the length of saidpedestal, said glass globe being movable with said slidable metal shellaxially of the pedestal and relatively to said flxed metal shell toeffect separation of said globe and xed shell to afford access to thepilot bulb for removal and replacement of the latter.

- 4. In a pedestal type lamp, a vertically extending standard, aharp-like element secured to and extending axially of said standard, anupwardly presenting cup-shaped opaque member secured to the standardimmediately beneath said harplike element, a light transmissible membermovably associated with said standard and arranged with its lower endadapted to rest upon the annular rim of said fixed cup-shaped member, asecond opaque member engageable with the upper extremity of said lighttransmissible member and movable together with the latter, means forsecuring said second opaque member immovably in position with respect tosaid standard whereby to clamp said light transmissible member insecured position between said opaque members, and a pilot bulb ofrelatively low wattage disposed Within said harp-like member whereby thesame is embraced within and completely enclosed by a surroundingenclosure formed of said opaque members and said light transmissiblemember.

PAUL C. CALISSI.

